fix(Makefile): update targets and add link checker

Makefile

@@ -1,29 +1,54 @@
 SHELL := /usr/bin/env bash -O globstar
 
-.PHONY: prepare-environment
-prepare-environment:
-	npm install
+# MISSING DOT
+# ==============================================================================
+PHONY+=missing-dot
+missing-dot:
+	grep --perl-regexp '## @(param|skip).*[^.]$$' values.yaml
 
-.PHONY: readme
-readme: prepare-environment
-	npm run readme:parameters
-	npm run readme:lint
+# README
+# ==============================================================================
+PHONY+=readme
+readme: readme/link readme/lint readme/parameters
 
-.PHONY: unittests
-unittests: unittests-helm unittests-bash
+PHONY+=readme/link
+readme/link:
+	npm install && npm run readme:link
 
-.PHONY: unittests-helm
-unittests-helm:
-	helm unittest --strict -f 'unittests/helm/**/*.yaml' -f 'unittests/helm/values-conflicting-checks.yaml' ./
+PHONY+=readme/lint
+readme/lint:
+	npm install && npm run readme:lint
 
-.PHONY: unittests-bash
-unittests-bash:
-	./unittests/bash/bats/bin/bats --pretty ./unittests/bash/tests/**/*.bats
+PHONY+=readme/parameters
+readme/parameters:
+	npm install && npm run readme:parameters
 
-.PHONY: update-helm-dependencies
-update-helm-dependencies:
+# HELM DEPENDENCIES
+# ==============================================================================
+PHONY+=helm/dependency-update
+helm/dependency-update:
 	helm dependency update
 
-.PHONY: yamllint
+# HELM UNITTESTS
+# ==============================================================================
+PHONY+=helm/unittest
+helm/unittest:
+	helm unittest --strict --file 'unittests/helm/**/*.yaml' --file 'unittests/helm/values-conflicting-checks.yaml' ./
+
+# BASH UNITTESTS
+# ==============================================================================
+PHONY+=bash/unittest
+bash/unittest:
+	./unittests/bash/bats/bin/bats --pretty ./unittests/bash/tests/**/*.bats
+
+# YAML LINT
+# ==============================================================================
+PHONY+=yamllint
 yamllint:
-	yamllint -c .yamllint .
+	yamllint -c .yamllint.yaml .
+
+# PHONY
+# ==============================================================================
+# Declare the contents of the PHONY variable as phony. We keep that information
+# in a variable so we can use it in if_changed.
+.PHONY: ${PHONY}